Instro

Music App for focus, flow, and momentum

Added July 8, 2026 · Last analysed July 8, 2026 · via · 60% unique tagline

Own this Launch?

StackScope is a free public catalogue of indie launches. We find launches on Product Hunt, Hacker News and similar feeds, then crawl each site to detect its tech stack and score it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 8 July 2026; the live site may have changed since.

Instro is early-stage. Main gaps: missing several security headers, incomplete legal pages, and no sitemap.

Launched on Product Hunt on July 8, 2026. The site is hosted on Vercel, with a domain registered 6 months before launch. We've detected 9 technologies on this site, covering DNS providers, business email, transactional email, and web fonts. The stack includes Svelte, SvelteKit, and Google Domains DNS.

It's one of just 3 launches we've crawled on this exact stack.

If you own this site, refresh the snapshot and see the full fix list any time →

3.9

StackScope Score

Poor

41/100 Launch Readiness

Partially ready

1/6 Security Headers

Poor

2/3 Legal

Partial

1/2 Crawl files

Partial

100/100 Performance

Fast

Vibe Score 0 · No AI signals

How much the site looks AI-generated. Informational pattern-match signal, not a verdict. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (9) · Indie stack

Infrastructure

DNS	Google Domains DNS
Hosting	Vercel (2)
Security	HSTS

Business email	Zoho Mail
Transactional email	Resend

Build & Framework

Font	Google Fonts
Framework	Svelte
Meta-framework	SvelteKit (3)

Business Tools

SaaS	Zoho

Infrastructure

Network

AMAZON-02 - Amazon.com, Inc., US

AS16509 · US

DNS

Google Domains DNS

Authoritative nameserver

DNSSEC

Not enabled

DNS responses unsigned. Cache-poisoning vulnerable.

Green hosting

Not green hosted

No green-energy record. Data from The Green Web Foundation.

SSL Certificate

Let's Encrypt

Valid 6 Jul 2026 to 4 Oct 2026

Certificate as captured in this snapshot, not a live check.

Domain Age

6 months

Registered Dec 2025 · Squarespace Domains II LLC.

Email Security

✗

SPF Not published. Your domain can be spoofed in phishing emails.

✓

DKIM Detected via known email provider

✗

DMARC Not published. Receivers fall back to permissive defaults.

MTA-STS Not deployed. Mail to your domain can be downgraded to plaintext en route.

TLS-RPT Not configured. You won't hear about silent SMTP TLS handshake failures.

Storage (2)

Cookies (1)

Name	Lifetime	Detected as
__vdpl	session	Vercel

Local storage (1)

Key	Size	Detected as
axis-selection	61 B	-

Readiness Breakdown How?

✓ Responsive viewport meta tag

✓ Favicon present

✓ Semantic HTML (nav, main, article)

- Custom title and meta description

- Open Graph tags (title, image, description)

- Canonical URL declared

- Twitter card meta tags

Performance How?

289 ms Server response

57% Faster than peers

484 ms Largest contentful paint

0.01 Cumulative layout shift

736 KB Page weight

3 Third-party domains

0 Console errors

0 Failed requests

Indicative grade from a single automated render, not a substitute for Lighthouse or field data, and not part of the StackScope score.

AI Stance

No AI stance declared

✗ llms.txt published

✓ No AI bots blocked in robots.txt

Content-Signal

? No directive declared

Link headers

? None advertised

Well-Known Files

✓ robots.txt

✗ sitemap.xml

✗ security.txt

✗ llms.txt

✗ ads.txt

✗ humans.txt

Legal

? Privacy Policy not detected

✓ Terms of Service

/legal/terms

Security Headers (1/6)

✗

Referrer-Policy

✗

X-Frame-Options

✗

Permissions-Policy experimental (check browser support)

✗

X-Content-Type-Options

✗

Content-Security-Policy

✓

Strict-Transport-Security

–

X-XSS-Protection deprecated (use Content-Security-Policy)

Build

0 JS files

5 CSS files

3 Third-party domains

Brand Colours

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.